Mathematics · Statistics
If the initial reliability coefficient of a test is r = 0.74, what will be the estimated reliability of the test if its length is doubled, according to the Spearman-Brown prophecy formula?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.90
- 20.87
- 30.85✓
- 40.83
Correct answer
0.85
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